What's the difference between Beidaihe and Nandaihe? When is the best time to play?

Beidaihe refers to a district in Qinhuangdao City, Hebei Province. Nandaihe is a tourist attraction, spanning Beidaihe District and Funing District of Qinhuangdao City. If you go to Beidaihe in summer, there are Tiger Stone Ocean Park and Olympic Park, all of which are summer resorts. You can go to Nandaihe in spring and autumn, which is a natural place to sunbathe. The water temperature is moderate and the seabed is delicate and soft.